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CVE-2023-0811

CRITICAL CVSS: 9.1 Published: 2023-03-16 Modified: 2026-06-17

Description

Omron CJ1M unit v4.0 and prior has improper access controls on the memory region where the UM password is stored. If an adversary issues a PROGRAM AREA WRITE command to a specific memory region, they could overwrite the password. This may lead to disabling UM protections or setting a non-ASCII password (non-keyboard characters) and preventing an engineer from viewing or modifying the user program.

Affected Platforms

Omron Sysmac Cp1H-Y20Dt-D FirmwareOmron Sysmac Cp1L-Em40Dt1-D FirmwareOmron Sysmac Cp1L-M30Dt1-D FirmwareOmron Sysmac Cp2E-N14Dt-DOmron Sysmac Cj2M-Cpu11Omron Sysmac Cp2E-N60Dt-AOmron Sysmac Cp2E-S30Dt1-D FirmwareOmron Sysmac Cj2H-Cpu65Omron Sysmac Cp1E-E10Dr-AOmron Sysmac Cp1L-L10Dr-D Firmware

Weakness Type

CWE-284

References